Glass-drawing machine.



L. A. THGRNBURG. GLASS` DRAWINGVY MACHINE. APPLICATION PIKIBD SEPT. 26, 1907.

Patented May 25, 1909i,

Y 3 SHEETS-SHEET 1.

l INVENTOR. Elin 60111 Thornn urg WITNESSES:

ATTORNEY L. A. THORl` SURG.

GLASS DRAWING MACHINE.

APPLICATION ULEB SEPT. 2e. 1907.

Patented May 25, 1909 3 SHEETS-SHEBT 2.

Lineol y WITNESSES;

L. A. THORNBURG.

GLASS DRAWING MACHINE.

APPLICATION FILED SEPT. ze, 1907.

Patented May 25, 1.909

3 SHEETS-SHEET 3.

INVENTOR. Lin c 0111 jfmwrnh urg BY f WITNESSES:

LINCOLN A. THORNBURG, OF HARTFCRD CITY, INDIANA.

GLASS-:DRAWING MACK-HNE.

Specification of Letters Patent.

Patented May 25, 1905.

Application filed September 26, 190.7. Serial No. 394,684.

To allwhom 'it may conceive:

Be it known that I, LINCOLN A. THORN- A BURG, of Hartford City, county of Blackford, yand State of Indiana, have invented a certain new and useful GlassDrawino Machine; and I do hereby declare that the fbllowing is a full, clear',.and exact description thereof,

reference being had -to the accompanying drawings, in which like numerals refer toI like parts.

This invention relates to im rovements on y the device set forth in former etters Patent Vgranted to me, No. 759,329, dated May 10,

190e, for a glass-drawing apparatus. Said device relates to the mounting and manipulatlon of a double drawing-pot from which glass may be vertically drawn. In said device the drawing lot has a double cavity, one on `each side t ereof, and Ahence it is desii-able to revolve the drawing-pot when one cavity has been emptied in order that a clean A cavity may be turned u ward for the reception of anew supplyv o glass to be drawn,

- and the formerly usedcavity will be turned yand then moved upward against the top stone.

The chief feature of my present invention'.

. consists inv mounting the drawing-pot so that it will on] revolve and not be nfoved upward. or ownward, and providin a top y stone in sections that are reinovab e somem what to ermit the revolution of the drawing pot; ong with the foregoing idea means are provided for manipulating said sect-ions of the top stone, that is, moving them out of and vinto place.

Another feature consists in the means for mounting the drawing-pot and revolving the same. l

The foregoing features and the-other ini- 5'0Erovements constituting.y this invention will e more fully understood" from the accompanying drawings and the following descriptionand claims.

In the drawingsFigure 1 is a central vertical section through the deviceshewing a cylinder ofglass being drawn, said section being on the line 1 -1 of Fig. 2. Fig.. 2 isa plan view of the entire device with sections of the top stone to ether, parts being broken away.` Fig. 3 is t ie same vwith some parts omitted and the top stones moved away from each other to permit the revolution of the drawing mold. Fig. 4 is a plan view of the to stone separated. Fig. 5 is a plan view olDa shell with the parts attached there'- to on the outside thereof, the s rocket chains, however, being removed. ig. 6 is an elevation of the righthand side of what is shown in Fig. 5, with the parts in their position when the top stones are together. ig.` 7 is an elevation of the right-hand side of what appears in Fig. 4. Fig. 8 is a front elevation of what is shown in Fig. 5. l

In the drawings the furnace body l0, which is builtof some Vrefractory material, such as fre-clay blocks and the/like, is ind closed by a boiler iron shell 11 c lindrieal in form, the two parts 10 .and 11 resting upon a suitable base 12 formed of refractor material also, and said base rests upon. -beams 13, only one of which, however, is shown.

14 is an opening at the bottom of the furnace chamber 15 through which gass intro duced through pipes 16 extending fr iii-some suitable sup ly and with their outlet ends upturned sulistantially as shown in Fig. 1. In the upper part of the furnace a glass pot 17 is mnuntemwhieh is symmetrical and double-sidedhaving cavities 18 on the upper and lower sides thereof. Glass 2G' from some supply of molten glass is ladled or otherwise y deposited in the upper cavity 18, of the lass pot, and from it glass is drawn upwar, as a pears in Fig. 1, which shows a c hinder of giitss 21 being drawn upward by a lowhpipe 22 which' has annular shell 23 on the lower end thereof. vl Y n le the glass is being drawn from 'the upper side loi the pot, it is he t warm and '1n condition for drawing by t e heat in the furnace 15 below the pot. To keep the heatedgases from escaping there is a sectional top stone 24.- which rests upon the top of the furnace body 10 and also the drawing pot 11, the inner peripheral surface of said top stone re istering and bei hush with the inner peri'p eral snriaee of the wall ofthe drawin .as appears-in Fig. L

After the g ass has, been drawn from the;

upper cavit` of the drag pot i7, said pot' can be revo ved so that the lower cavity will become nfpost and the upper one, winch sti contains some hardened lass, not drawn, Wi be lcwermost. Then e upper recepteele is filled with glass to be drei/vn, end i while it is being drawn, the hardened rernv nent of glass in the lower receptacle is melted by the heet iii the furnace end runs down through the opening 15 into seine receptacle 1 below for sueh vlees, so that by the time the glass is drawn troni the upper cavity of the I drawing potl'?, the lower eevity will be conipletely free from the remnant of glass and ready to be turned up again und i'illed for drawing.

.ln @onstruetions of the hind heretofore it hes beeneustoiniiry and necessiti-y for the drnwinif pot to be lowered in the furnace in order tlizit it could he turned without strile in(r or interfering with the top stone 2li. The chief feature of my iresent invention hns for i its object the nvoidii-nee oi this inode oi' operation and consists in turning the druwiinsr pot without moving it vertically down :ind up :is heretofore, but instead l inove the top stone out of the wey of the turniiif-f drawing pot. Heretofore this top stone has neen formed of one pie'ee, butin iny invention l divide it into. Q two pieces, as shown in Fins. 2, 3, and 4, :ind I will now proceed to exp ein the mounting of the drawing pot and the ineens for revolving it, and then l will explain the ineens for moving the top stone 24 out of and into place.

As tippen-rs in Fig. l. the drawing pot, which is cylindrical-l, is mounted on two trunnions 30 that extend through suitable round holes 31 in the sides ol the ela-y furnace body 10 and also through plates 32 which nre vertically slidarble in slots 52% located between the upper ports ol' the shell )i und furiuree i body l0. For this purpose vertirulslots 34W -are provided in thr opposite sides ol' the shell ll. The chiel' function ol the philes 252 is to close the opening; l so thet the lient sind grises will not esi'upe lroin the l'urnnce. On the endol enrh trunnion S0 there is it reduced or sinnlleitrunniou 55.3 hnvingbearing in the udjustuble henrin'g pluto Z50 located between z `tir-pull' 0ll liiricl.- o 'l l und these two brnehets nrc yshown connected zittheir lower ends, und th l inner one i secured to the side ol the shcll'li. Adjusting screws ll() beer ngztinst the under ysido ol' the blurring plates l 36 so its to elevado the drnwing pot to the i drawing; point und lto level the suine. The two hint-liefs il? und Ilo' uro provided with wide vcrlie l nenr their upper endsf i slols -i so thzttsnid trnnnion` nolylnivesomeintern] pluy oi' movement l'or ndiustnient to the ex- 1 itc-t drawingr position, und when so n iliusted, the dinwing,l plutes Siti n re held Vlroin any htternl niovonient hy sot screws 43. This ndjustinont ol' thi' drawing, pot is permitted by the htrge size ol' the openings 3l inthe well of the l'urnnce ehuniber und the sliding plutes llnnd the slots Si. :rnd il. V

Upon euch sniull trunnion 3() there is e l negers sprocket wheel secured, seid sprocket wheels lying between the shell il nud the inner brackets 37. By inea ns of these sprocket,

wheels 45 the drnwinnr pot is turned over, there beingI sprocket rlniins 4T extending lroin seid wheels to sprocket wheels le secured on the shell. 5() mounted in tho nrinsl 51 that ure secured to the side of the shell ll, nud snid shaft 5() is oscillnted by n lmnd-lever .-32 which is secured thereto.

The top sione sections 24 :tre soininnnuh. so that f he two when loger her l'orin nn nnnulnr stone for resting upon the :tiinulnr wnll olE the drawing pet lT. Fluch lop stone sei-tion hns on its side en extension or lip 13o lhnl rests upon n horizontul roller l5] mounted in hearing itrnis 152 thnt are secured lo the Ishell ll und extend outwztrdly therefrom, ns appears in Fig. 'lhe under sid(I olI oni-h ol' the extensions orlips l5() is soinewlnn ovnl or beveled so thnt when the stones nre sopnrntod to the position shown in Fig. -l, these extrusions or lips l5() will rest und ride upon the rollers ll so tlntt sind rollers will support the iniddle',portion ol sind stone scr-.lions l while they nre being inoved :twny l'roin or to- 'wzird eneh other, us shown in Figs. l und il. When the stone si-ietionstnre together, ns shown in Fig. 2, the underside ol' the lips inust be so l'oi'nied that the, rollers 51 will not y I lift the stones oi'l ol' the drewinupot. 'lhese stone sertionsM :tre preferably innde ol' enstiron end have extending outward l'roni nenr ench end thereof pins 53 that lit in notches 55 in the shitting levers f lfhesc shiftingr p levers :ire luleruuied on Ypins 57 extending' outward fi'ointhe sides oi the shell l l und between the ends ol seid lovers.

The .levers rire ull simultaneouslyr :ic-tunted by eonneetinscr bnrs 58, one on erich side ofthe device, thut nre pivoted to the lower ends ot one pair of levers 56 und to the lower ends of the rocking bers 59 on the ends of the shulit 60, which is mounted in theni'ins 6l secured to the shell il, es seen in Figs. 6 und S. Suid shalt 60 is actuated by :t hund lever' (52 thut is sei-,nred thereto. Connecting burs (53 rire pivoted to the lower end ol the other pitir oll levers 56 und to the-upper endol' the roeking bers 59, the nrrungei'nent of these parts beingr such that when the lever ll is elevated, the upper ends ol the lovers 50 will.' inove nwey from erich other and, therefore, sepairrite the top stones 24 und inove theiii into the v)osition shown in Fig. 3. On the other han when the hund lever 62 is depressed, said levers 56 will be moved into the position shown in Fia. 6, which Will bring the two top stones tovether, es shown in Fig. 2.

What l, elimini as in invention ltud desir;- to secure by Letters attent is:

l. ln glass-drawing apparatus, a, fui-nauwe open et the upper end, n revoluble por 1 mounted therein llush with the u per end of the furnace, n. top stone formed o seetioiis lll) llo

-turned over and to return said sections tol their normal closed position i2. In glass-drawing apparatus, a furnace openat the up er end with oppositely locatedhorizonta holes therethrough, a pot provided with oppositely extendmg trunnions passing through sa1d holes in the furnace, means on said trunmons for turnlng l `the pot over, a top stone formed of sections restlng upon said pot and furnace, and means n f t for separating the sections of said top stone toenable the pot to he turned over.

3. In glass-drawing apparatus, a furnace shell, a top stone formed of sections and resting u on said furnace shell, pins extending lateranly from saidl top stone, and means mounted on each sideof the shell for engaging said pins and moving thesections of the top stone outwardly awayfrom and inwardly toward each other.

ing'fupon said furnace shell, pins extendin v ylaterally'from said top stone, levers pivote on the sides of said shell in the upper ends of which the pins of said top stone section'sfit, and means for oscillating the upper ends of said sup orting levers awa from andtoward eac other, substantia ly as setf'forth. 5. In glass-drawing apparatus, a furnace shell, a top stone formed of sections and resting u on said furnace shell, pins extendin latera ly from said top stone, levers pivote on the sides of said shell in the upper ends of which the pins of said top stone sections fit,

-a connectin bar extendmg from the lower end of each ever, a rock-shaft, a handle for operating the same, and af rocking bar secured to each end of the rock-shaft and pivotally connected to said connecting bars for the simultaneous movement of said levers in opposite directions, substantially as set forth.

In witness' whereof, I have y .hereunto afiixed my signaturein the presence of the witnesses herein nari/ledlli S LINCOLN i4. XKTHORNBURG.

' m81 Witnesses: 

